Abstract <p>A mathematical model for calculating the output parameters of compressible plasma in a stationary plasma thruster (SPT) is constructed without considering the main plasma processes in the SPT. The studies are carried out using the equations of two-fluid electromagnetic hydrodynamics with full consideration of the electron inertia and the following dissipative processes: magnetic and hydrodynamic viscosities of electrons and ions, thermal conductivity of plasma and temperature relaxation. A method for numerically finding the corresponding output parameters is proposed. The calculation results are presented.</p>